Keri Hilson spread a little Christmas cheer in the Big Apple on Thursday (Nov. 18) by performing “The Christmas Song (Chestnuts Roasting on an Open Fire)” before the annual lighting of the UNICEF Snowflake in front of the Fifth Avenue Presbyterian Church.

“Everyone in the Christmas spirit?” asked the festive singer before delivering a piano-accompanied rendition of the holiday tune, made famous by Nat King Cole. Children from the foundation surrounded her as she flipped the switch on the crystal snowflake.